package com.rd.teacher.jichao.day22;

public class Test37 {

    public static void main(String[] args) {
        int a = 0;
        switch (a) {
            case 0:
                a = a + 0;
            case 1:
                a = a + 1;
            case 2:
                a = a + 2;
            case 3:
                a = a + 3;
        }
        System.out.println(a);
    }
}
